World of Goo is a physics based puzzle / construction game. The millions of Goo Balls that live in the beautiful World of Goo are curious to explore -- but they don't know that they are in a game, or that they are extremely delicious. Drag and drop living, squirming, talking, globs of goo to build structures, bridges, cannonballs, zeppelins, and giant tongues so that you can direct the Goo Balls to their goal on the other end of the stage.